Finding the Fourth Proportional to 142,787.69, 197,042.06 and 79,131.41

Step by Step Solution

1. Step 1: Write the proportion equation
   142,787.69 : 197,042.06 = 79,131.41 : x
2. Step 2: Convert to fraction form
   142,787.69/197,042.06 = 79,131.41/x
3. Step 3: Cross multiply
   142,787.69x = 197,042.06 × 79,131.41
4. Step 4: Simplify right side
   142,787.69x = 15,592,215,641.45
5. Step 5: Solve for x
   x = 15,592,215,641.45/142,787.69
6. Step 6: Final answer
   x = 109,198.60